<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区域-->
      <div class="avatar_box">
        <img src="../assets/logo.png">
      </div>

      <!-- 登录表单区域 -->
      <el-form class="login_from" :model="form" :rules="rules" ref="loginFromRef" >
        <!-- 用户名-->
        <el-form-item prop="username">
          <el-input v-model="form.username" placeholder="请输入用户名" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>

        <!-- 密码-->
        <el-form-item prop="password" ref="passwordRef">
          <el-input v-model="form.password" placeholder="请输入密码" prefix-icon="iconfont icon-mima"
                    type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginFrom">重置</el-button>
        </el-form-item>
      </el-form>

    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data () {
    return {
      form: {
        username: '',
        password: ''
      },

      rules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            triangle: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            triangle: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    // 重置密码
    resetLoginFrom () {
      this.$refs.loginFromRef.resetFields()
    },
    login: function () {
      // 预校验
      this.$refs.loginFromRef.validate(async valid => {
        if (!valid) return
        const { data } = await this.$http.post('login', this.form)
        console.log(data)
        // 为什么 data.code == 200 报错
        if (data.code !== 200) return this.$message.error(data.message)
        window.sessionStorage.setItem('token', data.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        height: 100%;
        width: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }

  .login_from {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
</style>
